Improvement in nail-machines



[66.] 2 Sheets--Sh eet 1f HENRY REESE.

Improvement in Na il Machines.

Patented Sep. 5.1871.

HENRY R SE.

lmproyementin NaH Machine& No, 118,744, I Patented Sep. 5.1871.

I [66.] 2 Sheets--Sheet 2.

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PATENT OFFICE.

HENRY EE sE, 0F BALTIMORE, MARYLAND.

IMPROVEMENT IN NAIL-MACHINES.

Specification forming part of Letters Patent No. 118,744, datedSeptember 5, 1871.

To all whom it may concern:

Be it known that I, HENRY REEsE, of Baltimore, in the county ofBaltimore and State of Maryland, have invented a new and ImprovedNail-Machine; and I do hereby declare the following to be a full, clear,and exact description of the same, reference being had to theaccompanying drawing making a part of this specification, in whichFigure 1 is an end elevation with part of the frame removed. Figs. 2 and3 are elevations of opposite sides. Fig. 4 includes details showing theoperation of the roller-bars and toggle arrangements, and Fig. 5 is atransverse section of the upper slide bar.

This invention relates to the manufacture of horseshoe or other wroughtnails by the process of rolling the ends of a heated cylindrical rodbetween opposite and exactly similar faces movin g with the samevelocity in contrary directions, said faces being inclined so as togradually approach each other as the rolling progresses, and being soshaped that the cylindrical rod may be rolled and drawn into a pointedblank, round in cross-section, and said blank then being pressed intothe proper shape between dies operated by a toggle or other equivalentarrangement.

Referring to the drawing, A is the frame-work of the machine; B, theoperating-shaft mounted crosswise of the frame-work; C, an ellipticplate fixed upon the shaft B, and having a camgroove, (1, in one side;D, a comiecting-bar, from one end of which a pin, I, extends into thegroove (1, said pin being kept in the said groove by means of a lever,S, pivoted at its lower end to the frame A and jointed at its upper endupon the pin I. At its other end the bar D is jointed to the stem F/ ofa cogged sector, E, which is pivoted to the outside of the frame A. F isa pinion fixed on one end of a shaft, a, and engaging with the sector E.At the other end of the shaft a is another pinion, L, which engages withtwo racks, b 0, one above and the other below it, which racks extendfrom adjacent ends of slide-bars Gr H,

which occupy guides in the frame-work. Both bars reciprocate length wiseand the lower one is arranged so as to have a slight vertical play inaddition to its other motion. The upper bar has a cutting-edge, 9,running lengthwise of its under side, and the lower bar a similarcutting-edge running lengthwise of its upper side, both edges being atthe front corners of the bars. A groove, 0, runs crosswise through theupper edge g, and a similar groove, f, through the lower edge, both nearadjacent ends of the bars G H. The bar G is constructed with atransverse ofiset along its lower side and between the groove 0 and theend of the bar, which offset forms a concave shoulder, g, Fig. 5, in thesame lines with one side of the groove 0. The bar H is similarly constructed. The bars G H are also provided with transverse dies h 70.

Motion being imparted to the shaft B through the belt-pulley K, theplate 0 rotates, and, through the medium of the groove d, pin I, bar D,sector E, shaft (1, pinions F L, and racks I) 0, causes the bars G H tomove simultaneously in opposite direction s until the grooves c f comeinto the same vertical plane, together forming a cylindrical opening,the cuttingedges g nearly touching each other, in which opening isplaced the heated end of the rod whence the nail is to be cut, said rodbeing inserted as far as desired. The movement of the slide-bars G H isnow reversed by the continued rotation of the plate 0 in the samedirection, and the portion of the rod between the slidebars is, whilerotating on its axis, gradually rolled and drawn out to the lengthdesired. The cuttingedges g penetrate the rod, making a groove aroundit, and thus keeping it from being drawn in between the slide-barsfurther than desired. The operat ing faces of the bars G H graduallyapproach each other as the grooves c f recede from each other, so thatby the time these bars are in the position shown in the figures the rodhas been drauui out into the proper size for a nail. When. the dies h kare opposite each other, with the conical nail-blank between them, thelifter m, Fig. 4, puts in operation the toggle-levers M N, whereof theformer connects the lever N with a block, 0, which slides vertically inthe framework, having triangular grooves in its sides, in which fitprojecting ribs cast on the inside of the frame-work. The block 0 abutsat its upper end against the bottom of the bar H and lifts the latter,thus producing a powerful pressure upon the nail'blank and forcing itinto the grooves of the dies h k, where it receives the proper shape. Bythis time the lifter m has cleared the lever M, and the block 0 and barH consequently drop by their own weight and that of the lever M to theirformer position, releasing the rod with the finished nail on its end,which is then withdrawn and slipped between the shears 0 p, which aresupported on the frame-work, the lower jaw 19 being secured to the, topof a movable block, E, Fig. 2, which is stepped in a lever, P, that israised by the lifter 12 just after the dropping of the block 0. The jaw19 thus raised severs the nail, which falls through a channel in theframes, not here shown, into a receptacle below.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The reciprocating slide-bars G H, provided with racks b c, andcombined with the shaft a,

